<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body{
            margin: 0;
        }
        *{
            margin: 0;
            padding: 0;
        }
        .d1{
            width: 996px;
            border-top:5px solid #000;
            border-right: 15px solid #000;
            padding: 0 8px 8px 8px;
            overflow: hidden;
        }
        .d2{
            width: 611px;
            height: 376px;
            background-color: grey;
            float: left;
            margin-right: 10px;
            margin-bottom: 10px;
            display: inline-block;
        }
        .d3{
            width:375px;
            height: 376px;
            background-color: yellow;
            float: left;
            margin-bottom: 10px;
            display: inline-block;
        }
        .d4{
            width: 366px;
            height: 233px;
            background-color: pink;
            float: left;
            margin-right: 20px;
            display: inline-block;
        }
        .d5{
            width: 198px;
            height: 233px;
            background-color: #0aa1ed;
            float: left;
            margin-right: 8px;
            display: inline-block;
        }
    </style>
</head>
<body>
    <div class="d1">
        <div class="d2"></div>
        <div class="d3"></div>
        <div class="d4"></div>
        <div class="d5"></div>
        <div class="d5"></div>
        <div class="d5"></div>
    </div>

</body>
</html>